Homogeneous aluminum solder



Patented Aug 11%..

rrnnr rrreo @SCAE JELLO, E IBJL'Q, BRAZIL.

EQIEOGEBEEOUS ALU I.

Ho Drawing.

To all whom it may concern.

Be it known that l, OsoAn Rnnnnno, a citizen of the Republic of Brazil, and resident of the city of Bahia, Brazil, have invented certain new and useful Improvements in Homogeneous Aluminum Solder, of which the following is aspecification.

My inventlon consists of an improvement in solders for uniting aluminum and provides a simple inexpensive and satisfactory method of soldering aluminum -articles' to one another so that pieces of alinum soldered by the process exhibit great resistance both to bending and drawing and may be 315 hammered and worked without rupture of the joint. Attempts have heretofore been made to'-'provide a solder for joining ali num parts but the results have not been satisfactory because in the use of such prior m aluminum solders it has been necessary to soak in a suitable pickle, or paint said parts with a suitable acid reparatlon preparatory to applying the sol er which is a laborious and costly method.

The solder for use in thisinvention may be prepared as follows:

There are melted together in a crucible of suitable capacity, silver, copper, and aluminum of approximately by weight onethird each. When fusion .is completed the attained molten mass is cast into the form of sticks or bars of suitable sizes in respect of cross sections and length. The proportions indicated-of the specific -materials may M modified slightly'accordingly as it is desired to obtain a more or less soft solder.

a lication filed time M, was. semi in. $24,.

lln using my invention the aluminum. parts which are to be soldered or brazed together are first cleaned with a file or other suitable means, a suficient amount of thesolder laid 40 on the requisite portion of one of the alumi num parts to be joined, said portion and solder and the requisite portion of the other part to be joined bein then heated by means of a blow-pipe or the like and when the solder has been sufificientlymelted thereby the requisite portions of the parts to be joined are premed together by means of avise, pincers or the like. The work is now allowed to cool; Soldering performed in this manner allows of any subsequent manipulation without fear of rupture, as

the solder and the soldered parts become homogeneous.

lit willhe understood that while I have described a preferred method of racticing my invention the same may be varied within the scope thereof and the proportions of the materials specified likewise varied sli htlyf I aving thus-described y invention what it cla is: 1 A solder for aluminum composed of silver rang from 53 to 63 parts, copper ranging from 57 to M parts and aluminum ranging from fiat to 73 parts. i

In testimony whereof l have hereunto at fixed y siature.

oso nnnnnno. 

